/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:19:13,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:19:13,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:19:13,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:19:13,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:19:13,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:19:13,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:19:13,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:19:13,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:19:13,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:19:13,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:19:13,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:19:13,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:19:13,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:19:13,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:19:13,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:19:13,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:19:13,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:19:13,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:19:13,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:19:13,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:19:13,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:19:13,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:19:13,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:19:13,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:19:13,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:19:13,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:19:13,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:19:13,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:19:13,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:19:13,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:19:13,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:19:13,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:19:13,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:19:13,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:19:13,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:19:13,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:19:13,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:19:13,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:19:13,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:19:13,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:19:13,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:19:13,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:19:13,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:19:13,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:19:13,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:19:13,452 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:19:13,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:19:13,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:19:13,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:19:13,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:19:13,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:19:13,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:19:13,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:19:13,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:19:13,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:19:13,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:19:13,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:19:13,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:19:13,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:19:13,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:19:13,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:19:13,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:19:13,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:19:13,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:19:13,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:19:13,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:19:13,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:19:13,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:19:13,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:19:13,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:19:13,798 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:19:13,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:19:13,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41814036/f7aa2bef8ece411f827b8a30063f9386/FLAG59969d167 [2020-10-14 09:19:14,325 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:19:14,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:19:14,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41814036/f7aa2bef8ece411f827b8a30063f9386/FLAG59969d167 [2020-10-14 09:19:14,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f41814036/f7aa2bef8ece411f827b8a30063f9386 [2020-10-14 09:19:14,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:19:14,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:19:14,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:19:14,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:19:14,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:19:14,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:14" (1/1) ... [2020-10-14 09:19:14,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243026c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:14, skipping insertion in model container [2020-10-14 09:19:14,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:14" (1/1) ... [2020-10-14 09:19:14,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:19:14,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:19:15,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:19:15,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:19:15,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:19:15,336 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:19:15,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15 WrapperNode [2020-10-14 09:19:15,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:19:15,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:19:15,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:19:15,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:19:15,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... [2020-10-14 09:19:15,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:19:15,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:19:15,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:19:15,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:19:15,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:19:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:19:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:19:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:19:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:19:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:19:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:19:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:19:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:19:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:19:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:19:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:19:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:19:16,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:19:16,529 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:19:16,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:16 BoogieIcfgContainer [2020-10-14 09:19:16,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:19:16,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:19:16,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:19:16,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:19:16,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:19:14" (1/3) ... [2020-10-14 09:19:16,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac2f8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:16, skipping insertion in model container [2020-10-14 09:19:16,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:15" (2/3) ... [2020-10-14 09:19:16,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac2f8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:16, skipping insertion in model container [2020-10-14 09:19:16,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:16" (3/3) ... [2020-10-14 09:19:16,543 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-14 09:19:16,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:19:16,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:19:16,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:19:16,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:19:16,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:19:16,602 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:19:16,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:19:16,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:19:16,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:19:16,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:19:16,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:19:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-10-14 09:19:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 09:19:16,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:16,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:16,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:16,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1363226384, now seen corresponding path program 1 times [2020-10-14 09:19:16,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:16,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798496259] [2020-10-14 09:19:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:20,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:20,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 09:19:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:19:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3127 [2020-10-14 09:19:20,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:20,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 09:19:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:19:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:19:20,535 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:20,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:20,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:20,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:19:20,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:20,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:20,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:20,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:20,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:19:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:20,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798496259] [2020-10-14 09:19:20,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:20,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:20,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970477624] [2020-10-14 09:19:20,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:20,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:20,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:20,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:20,675 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-10-14 09:19:20,994 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 09:19:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:22,017 INFO L93 Difference]: Finished difference Result 444 states and 727 transitions. [2020-10-14 09:19:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:22,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-14 09:19:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:22,036 INFO L225 Difference]: With dead ends: 444 [2020-10-14 09:19:22,037 INFO L226 Difference]: Without dead ends: 333 [2020-10-14 09:19:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-14 09:19:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2020-10-14 09:19:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-14 09:19:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 493 transitions. [2020-10-14 09:19:22,126 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 493 transitions. Word has length 85 [2020-10-14 09:19:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:22,128 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 493 transitions. [2020-10-14 09:19:22,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 493 transitions. [2020-10-14 09:19:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 09:19:22,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:22,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:22,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:19:22,143 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash 412536554, now seen corresponding path program 1 times [2020-10-14 09:19:22,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:22,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615104766] [2020-10-14 09:19:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 09:19:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:19:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-14 09:19:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:23,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:19:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 09:19:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:19:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:23,905 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:23,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:23,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:19:23,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:23,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:23,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:23,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615104766] [2020-10-14 09:19:23,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:23,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:19:23,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782392734] [2020-10-14 09:19:23,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:19:23,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:23,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:19:23,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:23,944 INFO L87 Difference]: Start difference. First operand 331 states and 493 transitions. Second operand 5 states. [2020-10-14 09:19:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:24,806 INFO L93 Difference]: Finished difference Result 509 states and 773 transitions. [2020-10-14 09:19:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:19:24,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 09:19:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:24,811 INFO L225 Difference]: With dead ends: 509 [2020-10-14 09:19:24,811 INFO L226 Difference]: Without dead ends: 507 [2020-10-14 09:19:24,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:19:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-14 09:19:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 333. [2020-10-14 09:19:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-14 09:19:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 495 transitions. [2020-10-14 09:19:24,839 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 495 transitions. Word has length 86 [2020-10-14 09:19:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:24,840 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 495 transitions. [2020-10-14 09:19:24,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:19:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 495 transitions. [2020-10-14 09:19:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 09:19:24,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:24,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:24,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:19:24,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash 180278519, now seen corresponding path program 1 times [2020-10-14 09:19:24,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:24,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922058694] [2020-10-14 09:19:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 09:19:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:19:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-14 09:19:25,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:25,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:19:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:19:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 09:19:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:26,098 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:26,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:26,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:26,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:19:26,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:26,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:26,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:26,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922058694] [2020-10-14 09:19:26,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:26,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:19:26,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452792467] [2020-10-14 09:19:26,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:19:26,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:26,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:19:26,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:26,151 INFO L87 Difference]: Start difference. First operand 333 states and 495 transitions. Second operand 5 states. [2020-10-14 09:19:26,395 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-14 09:19:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:27,736 INFO L93 Difference]: Finished difference Result 712 states and 1092 transitions. [2020-10-14 09:19:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:19:27,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-14 09:19:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:27,746 INFO L225 Difference]: With dead ends: 712 [2020-10-14 09:19:27,746 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 09:19:27,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:19:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 09:19:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2020-10-14 09:19:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-14 09:19:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 780 transitions. [2020-10-14 09:19:27,790 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 780 transitions. Word has length 87 [2020-10-14 09:19:27,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:27,791 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 780 transitions. [2020-10-14 09:19:27,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:19:27,791 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 780 transitions. [2020-10-14 09:19:27,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:19:27,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:27,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:27,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:19:27,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:27,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2087210581, now seen corresponding path program 1 times [2020-10-14 09:19:27,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:27,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392586390] [2020-10-14 09:19:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:32,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:19:32,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:19:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:19:32,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:32,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:19:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:19:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:33,083 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:33,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:33,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:33,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:33,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:19:33,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:33,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:33,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392586390] [2020-10-14 09:19:33,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:33,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:33,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973492805] [2020-10-14 09:19:33,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:33,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:33,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:33,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:33,138 INFO L87 Difference]: Start difference. First operand 514 states and 780 transitions. Second operand 4 states. [2020-10-14 09:19:33,327 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:19:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:34,127 INFO L93 Difference]: Finished difference Result 1348 states and 2090 transitions. [2020-10-14 09:19:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:34,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-14 09:19:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:34,135 INFO L225 Difference]: With dead ends: 1348 [2020-10-14 09:19:34,135 INFO L226 Difference]: Without dead ends: 931 [2020-10-14 09:19:34,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2020-10-14 09:19:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2020-10-14 09:19:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-14 09:19:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1421 transitions. [2020-10-14 09:19:34,191 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1421 transitions. Word has length 88 [2020-10-14 09:19:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:34,191 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1421 transitions. [2020-10-14 09:19:34,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1421 transitions. [2020-10-14 09:19:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:19:34,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:34,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:34,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:19:34,193 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash -781634197, now seen corresponding path program 1 times [2020-10-14 09:19:34,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:34,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953710059] [2020-10-14 09:19:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:34,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:39,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:19:39,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:19:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:19:39,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:39,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 09:19:39,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:19:39,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:19:39,503 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:19:39,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:39,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:39,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953710059] [2020-10-14 09:19:39,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:39,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:39,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102361128] [2020-10-14 09:19:39,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:39,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:39,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:39,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:39,558 INFO L87 Difference]: Start difference. First operand 929 states and 1421 transitions. Second operand 4 states. [2020-10-14 09:19:39,759 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:19:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:40,564 INFO L93 Difference]: Finished difference Result 2421 states and 3752 transitions. [2020-10-14 09:19:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:40,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-14 09:19:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:40,575 INFO L225 Difference]: With dead ends: 2421 [2020-10-14 09:19:40,575 INFO L226 Difference]: Without dead ends: 1673 [2020-10-14 09:19:40,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-10-14 09:19:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1671. [2020-10-14 09:19:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-14 09:19:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2552 transitions. [2020-10-14 09:19:40,678 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2552 transitions. Word has length 88 [2020-10-14 09:19:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:40,679 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2552 transitions. [2020-10-14 09:19:40,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2552 transitions. [2020-10-14 09:19:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:19:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:40,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:40,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:19:40,682 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1335028503, now seen corresponding path program 1 times [2020-10-14 09:19:40,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:40,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14765015] [2020-10-14 09:19:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:45,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:19:45,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:19:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:19:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:45,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 09:19:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:19:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 09:19:45,929 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:45,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:45,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:45,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:19:45,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:45,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:45,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:45,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14765015] [2020-10-14 09:19:45,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:45,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:45,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99600711] [2020-10-14 09:19:45,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:45,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:45,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:45,960 INFO L87 Difference]: Start difference. First operand 1671 states and 2552 transitions. Second operand 4 states. [2020-10-14 09:19:46,130 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:19:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:47,043 INFO L93 Difference]: Finished difference Result 4379 states and 6736 transitions. [2020-10-14 09:19:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:47,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-14 09:19:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:47,059 INFO L225 Difference]: With dead ends: 4379 [2020-10-14 09:19:47,059 INFO L226 Difference]: Without dead ends: 3021 [2020-10-14 09:19:47,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2020-10-14 09:19:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3019. [2020-10-14 09:19:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3019 states. [2020-10-14 09:19:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 4578 transitions. [2020-10-14 09:19:47,230 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 4578 transitions. Word has length 88 [2020-10-14 09:19:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:47,231 INFO L479 AbstractCegarLoop]: Abstraction has 3019 states and 4578 transitions. [2020-10-14 09:19:47,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 4578 transitions. [2020-10-14 09:19:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:19:47,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:47,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:47,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:19:47,235 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:47,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash -136985278, now seen corresponding path program 1 times [2020-10-14 09:19:47,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:47,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106429034] [2020-10-14 09:19:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:47,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:52,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:19:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:19:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:19:52,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:52,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 09:19:52,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:19:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:52,507 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:52,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:52,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:19:52,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:52,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:52,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:52,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106429034] [2020-10-14 09:19:52,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:52,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:52,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074993004] [2020-10-14 09:19:52,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:52,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:52,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:52,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:52,554 INFO L87 Difference]: Start difference. First operand 3019 states and 4578 transitions. Second operand 4 states. [2020-10-14 09:19:52,804 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:19:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:53,822 INFO L93 Difference]: Finished difference Result 7967 states and 12136 transitions. [2020-10-14 09:19:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:53,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-14 09:19:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:53,857 INFO L225 Difference]: With dead ends: 7967 [2020-10-14 09:19:53,857 INFO L226 Difference]: Without dead ends: 5477 [2020-10-14 09:19:53,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2020-10-14 09:19:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5475. [2020-10-14 09:19:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5475 states. [2020-10-14 09:19:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 8238 transitions. [2020-10-14 09:19:54,215 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 8238 transitions. Word has length 88 [2020-10-14 09:19:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:54,216 INFO L479 AbstractCegarLoop]: Abstraction has 5475 states and 8238 transitions. [2020-10-14 09:19:54,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 8238 transitions. [2020-10-14 09:19:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 09:19:54,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:54,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:19:54,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:19:54,220 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:54,221 INFO L82 PathProgramCache]: Analyzing trace with hash -821223255, now seen corresponding path program 1 times [2020-10-14 09:19:54,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:54,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398476406] [2020-10-14 09:19:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 09:19:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:19:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3873 [2020-10-14 09:19:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 09:19:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:19:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:58,330 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:19:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:58,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:58,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:19:58,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:58,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:19:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:19:58,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398476406] [2020-10-14 09:19:58,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:58,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:58,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224313430] [2020-10-14 09:19:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:58,367 INFO L87 Difference]: Start difference. First operand 5475 states and 8238 transitions. Second operand 4 states. [2020-10-14 09:19:58,540 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-14 09:19:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:59,725 INFO L93 Difference]: Finished difference Result 15093 states and 22688 transitions. [2020-10-14 09:19:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:59,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-14 09:19:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:59,775 INFO L225 Difference]: With dead ends: 15093 [2020-10-14 09:19:59,775 INFO L226 Difference]: Without dead ends: 10067 [2020-10-14 09:19:59,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2020-10-14 09:20:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 10065. [2020-10-14 09:20:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10065 states. [2020-10-14 09:20:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10065 states to 10065 states and 14902 transitions. [2020-10-14 09:20:00,240 INFO L78 Accepts]: Start accepts. Automaton has 10065 states and 14902 transitions. Word has length 88 [2020-10-14 09:20:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:00,241 INFO L479 AbstractCegarLoop]: Abstraction has 10065 states and 14902 transitions. [2020-10-14 09:20:00,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:20:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10065 states and 14902 transitions. [2020-10-14 09:20:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 09:20:00,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:00,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:00,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:20:00,249 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1373688119, now seen corresponding path program 1 times [2020-10-14 09:20:00,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:00,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673108090] [2020-10-14 09:20:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:02,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:02,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:20:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:20:02,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:02,801 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:20:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:02,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:02,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:02,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:02,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:20:02,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:02,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:02,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:02,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673108090] [2020-10-14 09:20:02,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:02,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:20:02,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777018126] [2020-10-14 09:20:02,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:20:02,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:20:02,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:02,837 INFO L87 Difference]: Start difference. First operand 10065 states and 14902 transitions. Second operand 6 states. [2020-10-14 09:20:03,076 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 09:20:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:07,417 INFO L93 Difference]: Finished difference Result 75150 states and 111835 transitions. [2020-10-14 09:20:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:20:07,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-14 09:20:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:07,604 INFO L225 Difference]: With dead ends: 75150 [2020-10-14 09:20:07,605 INFO L226 Difference]: Without dead ends: 65697 [2020-10-14 09:20:07,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:20:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65697 states. [2020-10-14 09:20:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65697 to 37343. [2020-10-14 09:20:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37343 states. [2020-10-14 09:20:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37343 states to 37343 states and 55296 transitions. [2020-10-14 09:20:10,319 INFO L78 Accepts]: Start accepts. Automaton has 37343 states and 55296 transitions. Word has length 89 [2020-10-14 09:20:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:10,319 INFO L479 AbstractCegarLoop]: Abstraction has 37343 states and 55296 transitions. [2020-10-14 09:20:10,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:20:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 37343 states and 55296 transitions. [2020-10-14 09:20:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 09:20:10,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:10,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:10,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:20:10,339 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1994292358, now seen corresponding path program 1 times [2020-10-14 09:20:10,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:10,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663054344] [2020-10-14 09:20:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2069 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:20:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:12,615 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:20:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:12,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:12,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:20:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:12,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:20:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:20:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:12,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663054344] [2020-10-14 09:20:12,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:12,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:20:12,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594689394] [2020-10-14 09:20:12,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:20:12,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:12,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:20:12,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:12,644 INFO L87 Difference]: Start difference. First operand 37343 states and 55296 transitions. Second operand 6 states. [2020-10-14 09:20:12,826 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 09:20:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:25,020 INFO L93 Difference]: Finished difference Result 307163 states and 455104 transitions. [2020-10-14 09:20:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:20:25,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-14 09:20:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:25,532 INFO L225 Difference]: With dead ends: 307163 [2020-10-14 09:20:25,532 INFO L226 Difference]: Without dead ends: 271801 [2020-10-14 09:20:25,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:20:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271801 states. [2020-10-14 09:20:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271801 to 138211. [2020-10-14 09:20:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138211 states. [2020-10-14 09:20:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138211 states to 138211 states and 204036 transitions. [2020-10-14 09:20:34,178 INFO L78 Accepts]: Start accepts. Automaton has 138211 states and 204036 transitions. Word has length 89 [2020-10-14 09:20:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:20:34,179 INFO L479 AbstractCegarLoop]: Abstraction has 138211 states and 204036 transitions. [2020-10-14 09:20:34,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:20:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 138211 states and 204036 transitions. [2020-10-14 09:20:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 09:20:34,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:20:34,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:20:34,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:20:34,228 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:20:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:20:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash -226217564, now seen corresponding path program 1 times [2020-10-14 09:20:34,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:20:34,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753580053] [2020-10-14 09:20:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:20:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:20:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:20:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:20:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:36,355 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:20:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:36,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:36,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:36,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:20:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:20:36,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:36,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753580053] [2020-10-14 09:20:36,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:36,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:20:36,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780957253] [2020-10-14 09:20:36,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:20:36,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:36,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:20:36,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:20:36,395 INFO L87 Difference]: Start difference. First operand 138211 states and 204036 transitions. Second operand 6 states. [2020-10-14 09:20:36,596 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 09:20:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:20:49,459 INFO L93 Difference]: Finished difference Result 406207 states and 599090 transitions. [2020-10-14 09:20:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:20:49,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-14 09:20:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:20:49,906 INFO L225 Difference]: With dead ends: 406207 [2020-10-14 09:20:49,906 INFO L226 Difference]: Without dead ends: 268517 [2020-10-14 09:20:50,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:20:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268517 states. [2020-10-14 09:21:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268517 to 267491. [2020-10-14 09:21:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267491 states. [2020-10-14 09:21:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267491 states to 267491 states and 392636 transitions. [2020-10-14 09:21:08,217 INFO L78 Accepts]: Start accepts. Automaton has 267491 states and 392636 transitions. Word has length 89 [2020-10-14 09:21:08,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:08,217 INFO L479 AbstractCegarLoop]: Abstraction has 267491 states and 392636 transitions. [2020-10-14 09:21:08,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:21:08,217 INFO L276 IsEmpty]: Start isEmpty. Operand 267491 states and 392636 transitions. [2020-10-14 09:21:08,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 09:21:08,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:08,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:21:08,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:21:08,249 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:08,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:08,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1479430699, now seen corresponding path program 1 times [2020-10-14 09:21:08,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:08,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554649834] [2020-10-14 09:21:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2420 [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:21:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:21:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 09:21:10,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:10,874 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 09:21:10,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:10,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:10,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:10,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554649834] [2020-10-14 09:21:10,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:10,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:21:10,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051291336] [2020-10-14 09:21:10,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:21:10,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:21:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:10,901 INFO L87 Difference]: Start difference. First operand 267491 states and 392636 transitions. Second operand 6 states. [2020-10-14 09:21:11,084 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 152